A Hidden Block is an invisible block that contains coins, a star or random items in the Mario Party series. Its appearance changes with each game, sometimes resembling Brick Blocks, other times looking more like a small Treasure Chest. They only appear after landing on a Blue Space. It can give out anywhere from five to twenty coins or give out items such as Skeleton Keys, or even Stars.
Mario Party DS
In Mario Party DS, there are four kinds of Hidden Blocks.
There is also an one-time use item called a Block Sensor that makes a Hidden Block appear on the space the player lands on after using it.
Paper Mario series
Names in other languages